This enabled the tracking of U-boat packs to allow convoy re- routings;
A Nazi U-Boat Tactic Stumped Allied Forces — Until a Retired British Naval
It was installed on German U-boats starting in 1942 and used until the end of the war. The system given the official title of FuMB 1 (for Funkmessbeobachtungsgerät, Radio measuring device). From July 1940, the British fitted the RAF ...
The high frequency direction finding system was operating but the area
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as Canadian operators realized when tracking German submarines in the Gulf of St.
of tracking them with innovative listening devices―precursors to modern sonar.
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Now extraordinary fresh details can be told of how the Royal Navy seized vital cipher information from captured German boats to make the work ...
of tracking them with innovative listening devices—precursors to modern sonar.